Introduction
Atrial standstill (AS) is a rare clinical condition characterized by
absence of the electrical and mechanical activity of the atrial
myocardium, and the spatial distribution of atrial lesion can be diffuse
or partial.1 Prior cases of AS have been reported in
the adult literature with tachyarrhythmias.2 Several
cases of AS have been described in acute myocarditis, hypertrophic
cardiomyopathy or dilated cardiomyopathy.2,3 AS was
characterized by the absence of P-waves in the electrocardiogram (ECG)
and lack of atrial contraction in the echocardiogram. However,
intracardiac electrophysiological examination in AS has not been
reported. In the present study, we report a case of left atrial
standstill with paroxysmal atrial fibrillation (AF) and atrial flutter
(AFL) who successfully received radiofrequency ablation.